From: Ralph Boehme <slow@samba.org>
Date: Wed, 6 Nov 2019 15:25:00 +0000 (+0100)
Subject: lib/param: introduce loadparm_substitution infrastructure
X-Git-Tag: ldb-2.1.0~598
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=741bbfd252c272f796d535d653c39abee3569c93;p=thirdparty%2Fsamba.git

lib/param: introduce loadparm_substitution infrastructure

Pair-Programmed-With: Ralph Boehme <slow@samba.org>

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
---

diff --git a/lib/param/loadparm.c b/lib/param/loadparm.c
index 5334e9c4e5d..759a0a8ca45 100644
--- a/lib/param/loadparm.c
+++ b/lib/param/loadparm.c
@@ -61,6 +61,7 @@
 #include "system/network.h" /* needed for TCP_NODELAY */
 #include "../lib/util/dlinklist.h"
 #include "lib/param/param.h"
+#define LOADPARM_SUBSTITUTION_INTERNALS 1
 #include "lib/param/loadparm.h"
 #include "auth/gensec/gensec.h"
 #include "lib/param/s3_param.h"
@@ -3598,3 +3599,31 @@ bool lpcfg_lanman_auth(struct loadparm_context *lp_ctx)
 		return false;
 	}
 }
+
+static char *lpcfg_noop_substitution_fn(
+			TALLOC_CTX *mem_ctx,
+			const struct loadparm_substitution *lp_sub,
+			const char *raw_value,
+			void *private_data)
+{
+	return talloc_strdup(mem_ctx, raw_value);
+}
+
+static const struct loadparm_substitution global_noop_substitution = {
+	.substituted_string_fn = lpcfg_noop_substitution_fn,
+};
+
+const struct loadparm_substitution *lpcfg_noop_substitution(void)
+{
+	return &global_noop_substitution;
+}
+
+char *lpcfg_substituted_string(TALLOC_CTX *mem_ctx,
+			       const struct loadparm_substitution *lp_sub,
+			       const char *raw_value)
+{
+	return lp_sub->substituted_string_fn(mem_ctx,
+					     lp_sub,
+					     raw_value,
+					     lp_sub->private_data);
+}
diff --git a/lib/param/loadparm.h b/lib/param/loadparm.h
index d0ce3d312e1..b2d4bd0fb6e 100644
--- a/lib/param/loadparm.h
+++ b/lib/param/loadparm.h
@@ -310,4 +310,21 @@ bool store_lp_set_cmdline(const char *pszParmName, const char *pszParmValue);
 
 int num_parameters(void);
 
+struct loadparm_substitution;
+#ifdef LOADPARM_SUBSTITUTION_INTERNALS
+struct loadparm_substitution {
+	char *(*substituted_string_fn)(
+			TALLOC_CTX *mem_ctx,
+			const struct loadparm_substitution *lp_sub,
+			const char *raw_value,
+			void *private_data);
+	void *private_data;
+};
+#endif /* LOADPARM_SUBSTITUTION_INTERNALS */
+
+const struct loadparm_substitution *lpcfg_noop_substitution(void);
+char *lpcfg_substituted_string(TALLOC_CTX *mem_ctx,
+			       const struct loadparm_substitution *lp_sub,
+			       const char *raw_value);
+
 #endif /* _LOADPARM_H */